President Takashi Hayashita

I am Prof. Takashi Hayashita (Sophia University), who has been appointed as the next President of The Society of Cyclodextrins, Japan at the general meeting in September, 2020. Former president, Prof. Hidetoshi Arima (Daiichi University of Pharmacy) has given a great deal of time and effort to our society for two years. I would like to take this opportunity to express my heartfelt gratitude for his effort.

Our society is an academic organization composed of members who are engaged in research and development on cyclodextrins and span a wide range of fields such as science, engineering, pharmacy, agriculture, and food science. The main activities of our society are the management of the cyclodextrin symposium held once a year, the planning and support of international symposiums, and the awards of academic societies, contribution awards, and incentive awards.

The 1st Cyclodextrin Symposium was held in 1981 organized by Prof. Iwao Tabushi (Kyoto University), and the 36th Symposium was held in 2019 organized by Prof. Yuan De-qi (Kobe Gakuin University). Similarly, the International Cyclodextrin Symposium was held in Hungary in 1981, with Dr. Jozsef Szejtli (Chinoin) as the organizer. In Japan, the 2nd (Tokyo) in 1984, the 7th (Tokyo) in 1994, the 14th (Kyoto) in 2008, and Profs. Keiko Takahashi (Tokyo Polytechnic University) and Takashi Hayashita(Sophia University) organized the 19th (Tokyo) in 2018. The first Asian Cyclodextrin Conference (ACC) was held in 2002 organized by Profs. Kenjiro Hattori (Tokyo Polytechnic University) and Keiji Yamamoto (Chiba University), and the 10th ACC in 2019 was held in Chengdu, China, organized by Prof. Cheng Young (Sichuan University).

The cyclic oligosaccharides, cyclodextrins, are water-soluble and have nano-sized hydrophobic cavities based on the size of their cyclic ring. Therefore, cyclodextrins have the function of encapsulating various organic molecules and dissolving them in water, and protecting molecules that easily react with water, oxygen, and light. Cyclodextrins are known as a natural product and have been confirmed their non-toxcity as a food additive. Therefore, cyclodextrins have been used in a wide range of fields such as instant coffee and tubed wasabi in the food industry, air fresheners and deodorants that utilize sustained release in households, and injections and drug delivery systems in medical materials. Recently, the function of cyclodextrins has attracted much attention as a therapeutic drug for Niemann-Pick disease type c. In 1992, Prof. Akira Harada (Osaka University) succeeded in molecular recognition of water-soluble polymers using cyclodextrins for the first time in the world as a new cyclodextrin research, which resulted in the development of novel cyclodextrin necklaces and cyclodextrin nanotubes. Later, Prof. Kohzo Ito (The University of Tokyo) has successfully developed novel slide-ring gels based on cyclodextrins exhibiting completely new mechanical properties. It is evident that the world's first-class cyclodextrin research based on supramolecular chemistry is being developed in Japan.

The Society of Cyclodextrins, Japan is a small-sized society with about 200 members, but researchers and engineers from various fields involved in cyclodextrin researches actively present their research and exchange information every year in Japan and in the world, realizing an initiative in the world cyclodextrin researches. I heartily expect that all researchers, regardless of university or company, as our society members will play an important role for creating new research fields using cyclodextrins in order to enrich the human lives in the world.

We sincerely welcome the enrollment of all researchers and engineers who are interested in cyclodextrins.